{"id":340,"slug":"web-almanac-2025-cwv-pass-rates","title":"Web Almanac 2025: 48% mobile / 56% desktop origins pass all 3 CWV; LCP is the bottleneck","kind":"reference","scope":"business","status":"current","audiences":["claude-code","candid-team"],"topics":["core-web-vitals","measurement"],"reference_body":"**Claims (HTTP Archive Web Almanac 2025, July 2025 CrUX data):**\n\n- **48% of mobile origins** and **56% of desktop origins** pass all three CWV\n- Per-metric mobile breakdown: **62% LCP good, 77% INP good, 81% CLS good**\n- Desktop is improving slowly (55% → 56% YoY); mobile improving faster (44% → 48%)\n- **More than half of the mobile web still fails CWV.**\n\n**Source:** Web Almanac 2025 — Performance chapter and SEO chapter (almanac.httparchive.org/en/2025/...)\n\n**Confidence:** Verified.\n\n**LCP is the gating metric.** When 62% pass LCP but 77% pass INP and 81% pass CLS, the metric to focus on is LCP. Most sites are losing CWV on the loading axis, not the interactivity or stability axes. See [[lcp-killers-catalogue]] for the diagnostic.","rationale_body":null,"metadata":null,"links":{"outgoing":[],"incoming":[{"slug":"web-almanac-2025-mobile-page-weight-2-56mb","title":"Web Almanac 2025: median mobile page weight crossed 2,559 KB in July 2025 (+7.8% YoY)","kind":"reference","scope":"business","link_type":"relates-to"},{"slug":"lcp-killers-catalogue","title":"Reference: the 8 most common LCP killers — ranked by observed frequency","kind":"reference","scope":"business","link_type":"relates-to"},{"slug":"cls-killers-catalogue","title":"Reference: the 5 most common CLS killers — and the fixes","kind":"reference","scope":"business","link_type":"relates-to"},{"slug":"research-brief-page-speed-moat","title":"Research brief: Page Speed as a Moat — why CWV separates the agencies from the freelancers (piece 9 of 15)","kind":"reference","scope":"business","link_type":"relates-to"},{"slug":"platform-cwv-pass-rates-june-2025","title":"June 2025 platform CWV pass rates (SEJ): Duda 83.63%, Shopify 75.22%, Wix 70.76%, Squarespace 67.66%, Drupal 59.07%, WordPress 43.44%","kind":"reference","scope":"business","link_type":"relates-to"},{"slug":"cwv-tiebreaker-not-major-ranking-factor","title":"Core Web Vitals is a tiebreaker-class Google ranking factor, not a heavy lever — independent studies (Perficient, AWR, Backlinko) corroborate","kind":"reference","scope":"business","link_type":"relates-to"},{"slug":"platform-cwv-pass-rates-nov-2025","title":"Platform mobile CWV pass rates, November 2025 CrUX Tech Report (SEJ analysis, Dec 2025)","kind":"reference","scope":"business","link_type":"relates-to"}]},"created_at":"2026-05-22T20:03:33.311Z","updated_at":"2026-05-22T20:03:33.311Z"}